Road bikes are going where they’ve never gone before, are expected to do more, and are being ridden harder than ever. At the same time disc brakes are rewriting the rules of what’s possible with rim design. For this new era, the Zipp 303 Firecrest Tubeless Disc-brake wheelset sets the new standard. With a disc-specific, tubeless rim, the 303 Firecrest Carbon Clincher is now internally 21mm wide and faster than ever. Designed from the start as a tubeless rim, the 303 Firecrest features a rim bed made with internal ridges to lock the tire’s bead in place, ensuring secure performance, even when ridden at lower tire pressures. A new carbon fiber layup keeps weight low while maintaining the 303’s legendary durability. The rim’s lightweight design allows the 303 to glide up the steepest climbs while SRAM's robust 77/177D hubset keep the wheels stiff and responsive.
Each Wheel Includes:
- Zipp Tubeless valve extender and valve-core wrench
- Zipp rim tape (factory taped)
- Zipp Tangente quick-release skewer
- Zipp thru-axle end caps

Stan's Arch CB7 is the ultimate carbon trail wheel. It's light enough to respond instantly from the first pedal stroke and durable enough for the Enduro World Series circuit. With a focus on ride quality, the Arch CB7 features a special layup and shape that deflects up to 10mm radially to soak up speed-robbing impacts, all while being laterally stiffer than just about every other carbon and alloy rim on the planet. The Arch CB7 rims also feature Stan's patented Bead Socket Technology, the original tubeless-ready rim design that has become the foundation of all current tubeless-ready systems. This wheel rolls on an updated Neo hub featuring smoother-rolling centerless ground axle help ensure long life and reliable performance.
- Arch CB7 wheels include pre-installed tubeless tape and presta valves
- Designed for trail riding and enduro racing
- Low-profile sidewalls promote proper tire shape and reduce rim weight
- 100% CNC-machined hubs
- Sapim Race 2.0/1.8/2.0 spokes with Secure Lock aluminum nipples
- RiACT system absorbs impacts and rolls faster
- Patented Bead Socket Technology rim shape offers easier tubeless inflation and more reliable seal
- WideRight rim design optimized for 2.25 - 2.50" tires

Stan's Arch CB7 is the ultimate carbon trail wheel. It's light enough to respond instantly from the first pedal stroke, and durable enough for the Enduro World Series circuit. With a focus on ride quality, the Arch CB7 features a special layup and shape that deflects up to 10mm radially to soak up speed-robbing impacts, all while being laterally stiffer than just about every other carbon and alloy rim on the planet. The Arch CB7 rims also feature Stan's patented Bead Socket Technology, the original tubeless-ready rim design that has become the foundation of all current tubeless-ready systems. This wheel rolls on an updated Neo hub featuring a Durasync 6-pawl freehub with fast 10-degree engagement. The 100% CNC-machined hub shell and smoother-rolling centerless ground axle help ensure long life and reliable performance.
- Arch CB7 wheels include pre-installed tubeless tape and presta valves
- Designed for trail riding and enduro racing
- Low-profile sidewalls promote proper tire shape and reduce rim weight
- 100% CNC-machined hubs with 6-pawl simultaneous engagement
- Sapim Race 2.0/1.8/2.0 spokes with Secure Lock aluminum nipples
- RiACT system absorbs impacts and rolls faster
- Patented Bead Socket Technology rim shape offers easier tubeless inflation and more reliable seal
- WideRight rim design optimized for 2.25 - 2.50" tires

Designed with input from Stan's Enduro World Series teams, the new Arch MK3 is ready to own every trail. WideRight optimized for maximum stability with 2.25" to 2.5" tires, Stan's expanded the internal width out to 26mm while keeping the rim incredibly light. The 27.5" Arch MK3 weighs only 425g. A new proprietary alloy and stronger, low-profile rim shape means the new Arch MK3 is built to last. Featuring Bead Socket Technology, the new Arch MK3 also offers the unmatched traction, control, and reliability only found on genuine Stan’s NoTubes rims.
- The perfect balance of strength and weight
- 24% wider than the Arch EX for improved stability with larger tires
- Same light weight as the Arch EX
- Low-profile shape rolls faster, lasts longer, and helps stop tire pinch flats
- 25% stiffer and stronger for improved handling
- Lighter and more durable rim shape and alloy
- Neo hubs accelerate quicker and last longer
- Most trusted tubeless system for easy setup and low maintenance
- Sapim Secure Lock aluminum nipples
- WideRight optimized for Trail tires / 2.25 - 2.50
- Includes pre-installed tape for tubeless use and presta valve; 15x100mm front wheels include quick-release end caps and quick release; 20x110mm front wheels include 15x100mm end caps

Designed with input from Stan's Enduro World Series teams, the new Arch MK3 is ready to own every trail. WideRight optimized for maximum stability with 2.25" to 2.5" tires, Stan's expanded the internal width out to 26mm while keeping the rim incredibly light. The 27.5" Arch MK3 weighs only 425g. A new proprietary alloy and stronger, low-profile rim shape means the new Arch MK3 is built to last. Featuring Bead Socket Technology, the new Arch MK3 also offers the unmatched traction, control, and reliability only found on genuine Stan’s NoTubes rims.
- The perfect balance of strength and weight
- 24% wider than the Arch EX for improved stability with larger tires
- Same light weight as the Arch EX
- Low-profile shape rolls faster, lasts longer, and helps stop tire pinch flats
- 25% stiffer and stronger for improved handling
- Lighter and more durable rim shape and alloy
- Neo hubs accelerate quicker and last longer
- Most trusted tubeless system for easy setup and low maintenance
- Sapim Secure Lock aluminum nipples
- WideRight optimized for Trail tires / 2.25 - 2.50
- Includes pre-installed tape for tubeless use and presta valve; 12x142mm rear wheels also include quick-release end caps and quick release.

Designed with input from Stan's Enduro World Series teams, the new Arch MK3 is ready to own every trail. WideRight optimized for maximum stability with 2.25" to 2.5" tires, Stan's expanded the internal width out to 26mm while keeping the rim incredibly light. The 27.5" Arch MK3 weighs only 425g. A new proprietary alloy and stronger, low-profile rim shape means the new Arch MK3 is built to last. Featuring Bead Socket Technology, the new Arch MK3 also offers the unmatched traction, control, and reliability only found on genuine Stan’s NoTubes rims.
- The perfect balance of strength and weight
- 24% wider than the Arch EX for improved stability with larger tires
- Same light weight as the Arch EX
- Low-profile shape rolls faster, lasts longer, and helps stop tire pinch flats
- 25% stiffer and stronger for improved handling
- Lighter and more durable rim shape and alloy
- Neo hubs accelerate quicker and last longer
- Most trusted tubeless system for easy setup and low maintenance
- Sapim Secure Lock aluminum nipples
- WideRight optimized for Trail tires / 2.25 - 2.50
- Includes pre-installed tape for tubeless use and presta valve; 12x142mm rear wheels also include quick-release end caps and quick release

Stan’s S1 wheelset line brings patented tubeless technology to an even wider range of riders. Built for long life, low maintenance, and outstanding value, the S1 series wheels feature 6061 series alloy rims and are available in six different widths suited to a wide range of tire sizes and riding styles.
With an emphasis on value and durability, the S1 alloy wheelsets join a mountain wheel line-up that currently includes Stan’s successful MK3 premium alloy wheels and innovative Valor and Bravo carbon series wheelsets. While MK3 wheelsets are built to balance strength, light weight, and stiffness, S1 wheelsets focus on maximum strength and durability. The deeper profile and thicker walls of the S1 rims result in a 50-70g weight increase over MK3 rims, but offer greater impact strength for an even wider range of use.
“The new S1 series wheels were developed from rims ridden in Redbull Rampage and raced on the World Cup DH circuit for years,” said Creative Director, Chris Currie. “The goal was to take everything we’ve done for tubeless technology, and put it into a truly bombproof and affordable wheel.”
Designed according to Stan’s WideRight rim and tire fit system, S1 series wheelsets are available in six different rim models, with internal widths ranging from 23mm to 38mm. Combined with Stan’s low-profile, high-volume Bead Socket Technology rim design, these widths let the new S1 range accommodate tires from 2-inch to 3.5-inch.
All S1 wheelsets are built with 32 spokes front and rear, Sapim’s proven Race spokes, Secure Lock brass nipples, and Stan’s faster-engaging Neo hubs. Hubs are available to fit most axle systems, including Boost.
The S1 series includes reinforced versions of the classic Crest, Arch, and Flow--names already familiar to fans of Stan’s tubeless rims. In addition to the Crest S1, Arch S1, and Flow S1, three entirely new wider wheelsets will be available. The Sentry S1, Baron S1, and Major S1 bring Stan’s patented Bead Socket Technology to Plus bikes.
Arch S1 Wheelset
- Use: Trail and Enduro
- Internal Rim Width: 26mm
- Optimal Tire Size: 2.25 to 2.5-inch
- Hubs: Stan’s Neo 32-hole Front, 32-hole Rear
- Spokes/Nipples: Sapim Race Black 2.0/1.8/2.0mm, Secure Lock Brass Silver Nipples
- Wheel Sizes and Weights: 27.5-inch (1,882g) and 29-inch (1,974g)

The 35mm internal width of the Baron MK3 brings Stan's unmatched traction and control to Plus tires. The Baron MK3 is optimized for 2.80 – 3.20-inch tires, and joins the Sentry and Major to offer the most rim width options for wider tires. The combination of a 35mm rim and Stan's patented ultra-low-profile sidewall means the Baron MK3 keeps you in control on even the most technical trails, while still rolling faster than conventional rim designs. Stan's low profile rim shape is also lighter by design, a great advantage for Plus wheels. The Baron MK3 wheelset includes the Neo hub with CNC-machined shell and updated axle and bearing placement for maximum durability. The cassette body has six pawls for quick engagement and reliable power transfer on the trail. Tubeless performance has never been as fast, easy, and reliable. The Baron MK3 brings out the most in your high-volume tires.
Baron MK3 wheels include pre-installed tape for tubeless use and presta valve; 15x100mm front wheels include quick-release end caps and quick release; 20x110mm front wheels include 15x100mm end caps.
- Patented BST rim shape for improved handling and less rolling resistance with high volume tires
- Maximum stability and control with a 35mm internal width
- Stronger, stiffer, and lighter 6069 alloy and rim shape
- Neo hubs with new Durasync freehubs accelerate quicker
- Most trusted tubeless system for easy setup and low maintenance
- Sapim Force spokes and Sapim Secure Lock aluminum nipples
- WideRight optimized for 2.80 – 3.20-inch Trail tires

The 35mm internal width of the Baron MK3 brings Stan's unmatched traction and control to Plus tires. The Baron MK3 is optimized for 2.80 – 3.20-inch tires, and joins the Sentry and Major to offer the most rim width options for wider tires. The combination of a 35mm rim and Stan's patented ultra-low-profile sidewall means the Baron MK3 keeps you in control on even the most technical trails, while still rolling faster than conventional rim designs. Stan's low profile rim shape is also lighter by design, a great advantage for Plus wheels. The Baron MK3 wheelset includes the Neo hub with CNC-machined shell and updated axle and bearing placement for maximum durability. The cassette body has six pawls for quick engagement and reliable power transfer on the trail. Tubeless performance has never been as fast, easy, and reliable. The Baron MK3 brings out the most in your high-volume tires.
Baron MK3 wheels include pre-installed tape for tubeless use and presta valve; 12x142mm rear wheels also include quick-release end caps and quick release.
- Patented BST rim shape for improved handling and less rolling resistance with high volume tires
- Maximum stability and control with 35mm internal width
- Stronger, stiffer, and lighter 6069 alloy and rim shape
- Neo hubs with new Durasync freehubs accelerate quicker
- Most trusted tubeless system for easy setup and low maintenance
- Sapim Force spokes and Sapim Secure Lock aluminum nipples
- WideRight optimized for 2.80 – 3.20-inch Trail tires

Stan’s S1 wheelset line brings patented tubeless technology to an even wider range of riders. Built for long life, low maintenance, and outstanding value, the S1 series wheels feature 6061 series alloy rims and are available in six different widths suited to a wide range of tire sizes and riding styles.
With an emphasis on value and durability, the S1 alloy wheelsets join a mountain wheel line-up that currently includes Stan’s successful MK3 premium alloy wheels and innovative Valor and Bravo carbon series wheelsets. While MK3 wheelsets are built to balance strength, light weight, and stiffness, S1 wheelsets focus on maximum strength and durability. The deeper profile and thicker walls of the S1 rims result in a 50-70g weight increase over MK3 rims, but offer greater impact strength for an even wider range of use.
“The new S1 series wheels were developed from rims ridden in Redbull Rampage and raced on the World Cup DH circuit for years,” said Creative Director, Chris Currie. “The goal was to take everything we’ve done for tubeless technology, and put it into a truly bombproof and affordable wheel.”
Designed according to Stan’s WideRight rim and tire fit system, S1 series wheelsets are available in six different rim models, with internal widths ranging from 23mm to 38mm. Combined with Stan’s low-profile, high-volume Bead Socket Technology rim design, these widths let the new S1 range accommodate tires from 2-inch to 3.5-inch.
All S1 wheelsets are built with 32 spokes front and rear, Sapim’s proven Race spokes, Secure Lock brass nipples, and Stan’s faster-engaging Neo hubs. Hubs are available to fit most axle systems, including Boost.
The S1 series includes reinforced versions of the classic Crest, Arch, and Flow--names already familiar to fans of Stan’s tubeless rims. In addition to the Crest S1, Arch S1, and Flow S1, three entirely new wider wheelsets will be available. The Sentry S1, Baron S1, and Major S1 bring Stan’s patented Bead Socket Technology to Plus bikes.
Baron S1 Wheelset
- Use: Plus Tire Performance, Adventure, and Trail
- Internal Rim Width: 35mm
- Optimal Tire Size: 2.8 to 3.2-inch
- Hubs: Stan’s Neo 32-hole Front, 32-hole Rear
- Spokes/Nipples: Sapim Race Black 2.0/1.8/2.0mm, Secure Lock - Brass Silver Nipples
- Wheel Sizes and Weights: 26-inch (1,998g), 27.5-inch (2,060g), and 29-inch (2,162g)

Stan’s S1 wheelset line brings patented tubeless technology to an even wider range of riders. Built for long life, low maintenance, and outstanding value, the S1 series wheels feature 6061 series alloy rims and are available in six different widths suited to a wide range of tire sizes and riding styles.
With an emphasis on value and durability, the S1 alloy wheelsets join a mountain wheel line-up that currently includes Stan’s successful MK3 premium alloy wheels and innovative Valor and Bravo carbon series wheelsets. While MK3 wheelsets are built to balance strength, light weight, and stiffness, S1 wheelsets focus on maximum strength and durability. The deeper profile and thicker walls of the S1 rims result in a 50-70g weight increase over MK3 rims, but offer greater impact strength for an even wider range of use.
“The new S1 series wheels were developed from rims ridden in Redbull Rampage and raced on the World Cup DH circuit for years,” said Creative Director, Chris Currie. “The goal was to take everything we’ve done for tubeless technology, and put it into a truly bombproof and affordable wheel.”
Designed according to Stan’s WideRight rim and tire fit system, S1 series wheelsets are available in six different rim models, with internal widths ranging from 23mm to 38mm. Combined with Stan’s low-profile, high-volume Bead Socket Technology rim design, these widths let the new S1 range accommodate tires from 2-inch to 3.5-inch.
All S1 wheelsets are built with 32 spokes front and rear, Sapim’s proven Race spokes, Secure Lock brass nipples, and Stan’s faster-engaging Neo hubs. Hubs are available to fit most axle systems, including Boost.
The S1 series includes reinforced versions of the classic Crest, Arch, and Flow--names already familiar to fans of Stan’s tubeless rims. In addition to the Crest S1, Arch S1, and Flow S1, three entirely new wider wheelsets will be available. The Sentry S1, Baron S1, and Major S1 bring Stan’s patented Bead Socket Technology to Plus bikes.
Crest S1 Wheelset
- Use: Aggressive Cross Country and Trail
- Internal Rim Width: 23mm
- Optimal Tire Size: 2.0 to 2.25-inch
- Hubs: Stan’s Neo 32-hole Front, 32-hole Rear
- Spokes/Nipples: Sapim Race Black 2.0/1.8/2.0mm, Secure Lock - Brass Silver Nipples
- Wheel Sizes and Weights: 26-inch (1,649g ), 27.5-inch (1,731g), and 29-inch (1,813g)